Date.UTC() is a function with a name that begins
with "Date". It is related to the Date object, but it is
not a method of the Date object, and is not invoked on a
Date object. It is always invoked as Date.UTC(),
not as date.UTC() on some Date object
date.

The arguments to Date.UTC() specify a date and time,
and are understood to be in UTC (Universal Coordinated
Time)--i.e., they are in the GMT time zone. The specified UTC
time is converted to the millisecond format, which can be
used by the Date() constructor method, and by the
Date.setTime() method.

The Date() constructor method can accept date and
time arguments identical to those that Date.UTC()
accepts. The difference is that the Date()
constructor assumes local time, while Date.UTC()
assumes UTC. To create a Date object using a UTC time
specification, you can use code like this: